Pumping jack



W. E. BROWN July 27 1926.

PUMPING JACK Filed March 13, 1926 mm g INVENTOR. WMU/9M E. @ROW/V un 00 lllumn ml nn Patented July 27, 1926.

UNITED SAS 'WILLIAM E. BROWN, OF COALINGA, CALIFORNIA.

PUMPING J' ACK.

Application filed March 13, 1926.

This invention relates to deep well pumping apparatus and particularly pertains to oil well pumping jacks.

It is the practice in low producing oil fields to provide a single power plant for a group of adjacent wells. In prior installa# tions this power plant was connected with the pumping jack of each well by a cable commonly termed a pull rod. This pull rod was connected with the power plant and with the walking beam of the pumping jack, and the power plant exerted a pull thereon at regular intervals to raise the walking beam and its connected pump rods. At the cessation of each pull on the pull rod it was released so that the walking beam and pump rods would lower due to their own weight.

In some instances the walking beam has been counterweighted to partially counterbalance the weight of the reciprocating pump parts to relieve the power plant. It was impractical, however, to counterbalance thefull weight of the moving pump parts because this unbalanced weight was the only medium of lowering the pump rods. These unbalanced weights imposed a considerable load on the power plant and conse uently the pumping jacks required consic erable power for operation.

It is the principal object of the present invention to provide a generally improved pumping jack for deep well pumps7 by means of which positive action of the pump is obtained with a minimum of expended power.

In carrying out this object I dispose coun- ,terweights on the jacks to counterbalance` the entire weight of the well load. The jack is connected with the power plant by two pull rods which are alternately operated to positively oscillate the walking beam and thus reciprocate the pump. As the well load is entirely counterbalanced, but a minimum of power is necessary to operate the jack.

One form which the invention may assume is exemplified in the following description and illustrated by way of example in the accompanying drawings7 in which:

Fig. 1 is aperspective view of a pump jack embodying the preferred form of my present invention.

Fig. 2 is a diagrammatic view showing the manner in which the pull rods are alternately operated.

Referring more particularly to the accompanying drawings, 10 indicates a pair of Serial N0. 94,473.

base members which may be stationarily lixed on the fioor of the derrick in alignment with the mouth of the well. These base members 10 are fitted with bearings 11 which support a shaft 12. This shaft extends through a bearing 14 disposed between the bearings 11 and fixed intermediate the end of the horizontal arm 15 of an oscillating frame 16.

The frame 16 is provided with a vertical arm 17 fixed to the horizontal arm 15 centrally thereof and at right angles thereto. The upper and lower portions of the vertical arm 17 extend equal distances from opposite sides of the horizontal arm, as disclosed in the drawings. I provide braces 18 for rigidly connecting the arms of the frame 16 together.

At one end, the horizontal arm 15 is pivotally connected with the lower end of a vertically disposed connecting rod 19. The upper end of the rod 19 is pivotally connected with the pump end of a walking beam 20, so that oscillation of the frame 16 will be accompanied by oscillation of the walking beam.

The pump end of the walking beam is fitted with a bifurcated saddle 21 upon which a trunnion 22 bears. This trunnion is fixed on the pump rod 23 of the pump.

As illustrated, the walking beam extends longitudinally and above the oscillating frame 16, and is pivotally sup orted at its other end by vertical posts 24 w ich are rigidly supported by the base membersl 10.

At the end of the horizontal arm 15 opposite that to which the connecting rod 19 connects, I secure a counterweight 25. This counterweight is of sufficient weight to balance the entire weight of the well load about the axis of the shaft 12.

To oscillate the pump jack frame 16, I provide a pair of pull rods 26 and 27 which may be cables or rigid rods as desired.

In most cases the wells are locatedy at considerable distances from the power plant, and in such instances the pull rods 26 and 27 are usually of cable. The pull rods are connected at the power plant to a pair of opposed eccentrics 28 which are driven by the plant. As these eccentrics are opposed a pull will be -alternately exerted on the rods 26 and 27. The stroke of these rods equal the stroke of the pump.

The pull rod 26 is connected with the upper end of the vertical arm 17 of the los trame 16 `and the rod 27 is connected with the lower en'd of the arm 17. Therefore, when the rods are alternately operated as described, the 'trame 16 will be oscillated. This movement will be imparted to the walking beam 2O and consequently to the pump rod 23. The stroke ot the pull rods is sullicient to oscillate the walking beam an amount whereby it will impart the pro 3- er amount ot reciprocal movement to tne pumlp rod. A

In operation oit the device, it is constructed substantially as described and mounted on the `floor ot the derrick in cooperative relation rto the mouth et the well and lthe walking beam is operatively connected to the pump rod as disclosed. The .pull rods 26 and 27 are then-connected to the opposite ends ojt the arm l5 and to the opposed eccentrics at the power plant.

v Then a p'ull is exerteduon the pull rod 26, the walking beam will be raised and will impart theupward stroke to the pump rod 2S. When the pull on the rod 26 ceases, the pull on the rod 2T commences, thus lowering thewalking beam and permitting the pump'rod mechanism to lower by its own weight.

As the wellload and vcounterweight are balanced about the axis of the shaft l2, the load imposed on the power plant will be light and consequently7 a minimum amount oit power will be necessary to operate the pumping jack and its connected pump. Likewise, the pump will be positively operated` .lt is obvious from the foregoing that have yprovided an inexpensive pumping jack, which minimizes the power required to operate a deep well pump and which may be actuated trom a central rpower plant to positively operate the pump.

Vhile I have shown 'the preferred form ot my invention, it is to beunderstood that various changes may be made in its construction by those skilled in the art without departing trom the spirit ot' the invention. as defined in the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A'pumpingjack comprising a walking beam adapted to be connected to a well pump tor operating the same, a pivotal member beneath the walking beam and operatively connected at oney end to the beam `for 'operating the latter, the other end of said member being counterweighted to entirely counterb-alance the well load, and means for alternately exerting a pull on the member from points opposed with respect to its pivotal point whereby t'o oscillate it and operate the walking beam.

V2. A pumping jack comprising a walking beam pivotally supported at one end, the

other end being' adapted to be connected to a well pump ter operating the same, a horizent-ally disposed pivotal 'trame disposed beneath the walking beam and operatively connected at one end to the walking beam, the other end ot said trame having a counterweight to counterbalance the well load, said trame having portions arranged intermediate its ends and extending upon opposite sides ot' the pivotal point ot said trame, and means connected Lwith said portions adapted to be alternately operated to oscillate the trame and thereby operate the walking beam.

3. A pumping jack comprising` a wall-ring beam pivotally supported at one end, the other end ot said walking beam being adapted to be connected with a well pump tor operating the same, a trame disposed beneath the walking beam and centrally pivoted whereby it may oscillate 'in a vertical plane, said trame having horizontal portions extending from opposite sides "ot the pivotal point, one of said horizontal portions being connected with the walking beam, the other supporting a counterweight to entirely counterbalance the well load, said trame having vertically extending portions arranged substantially centrally thereof and extending upon opposite sides ot the pivotal point, a pull rod connected with each vertical eXtending-portion, and means for alternately 'exerting a pull on said 'rods to. oscillate the trame yand thereby operate the walking beam. l

4. A pumping jack comprising a horizontally disposed walkinOV beam pivotally supported at one end, the other end ot said walking beam being adapted'to be connected with a well pump for operating the same, a centrally pivoted trame disposed beneath the walking beam and adapted to 'be oscillated in a vertical plane, a vertically disposed connecting rod connecting one endet' said 'trame to the walking beam, 4the other end of said :trame being counterweighted to counterbalance the well load, a pull rod connected to the trame above-the pivotal point and substantially centrally-ot the trame, a pull rod connected to the traine'below the pivotal point and substantially centrally ot the trame, and means for alternately exerting a pull onksaid pull rods tor oscillating said trame and operating the walkingbeam.

5. pumping `iack comprising a horizontally disposed walking'beam -pivotally support-ed at one 'end and adapted to be'connected at its other end to a well pump tor operating the same, a pivotal frame, a connection `betweenone end o'l' said `trame'and said walking beam, :the other end oit the frame being counterweighted to counterbalance thek well load, and means rtor oscillating said trame in a verticalplane to' operate the walking beam, said means comprisllO ing a pair of opposed eccentrics, and connecting means between each eccentric and said frame, said connecting means connecting with the frame on opposite sides of the pivotal point thereof.

6. A pumping jack comprising a walking beam pivotally supported on one end and adapted to be connected at its other end to a well pump 'for operating the same, a pivotal frame disposed beneath the walking beam, said frame comprising a horizontal portion, a pivotal mounting therefor intermediate its ends whereby it may be oscillated in a vertical plane, a vertically disposed connecting rod connecting one end of said horizontal portion of the frame to the walking beam, a counter'weight disposed at the opposite end of the horizontal portion of the frame for entirely counterbalancing the well load, a vertically arranged member rigidly secured to the horizontal one and extending upwardly and downwardly upon opposite sides of the pivotal point of the frame, a pull rod connected with the upper end of the vertically arranged member, a pull rod connected with the lower end of the vertically arranged member, said pull .rods being connected with opposed eccentrics whereby they will be alternately operated to oscillate the frame and thereby operate the walking beam.

WILLIAM E. BROWN. 

